Currently the RedshiftDataNode will retrieve the local IP of the leader node, which cannot be accessible if the cluster is hosted outside VPC. This can be fixed by passing the JDBC connection string instead of the cluster_id.
Coverage decreased (-0.05%) to 63.908% when pulling 8cc148dd701e0e144904c56c5f6888d9cef62f8d on eldhosejohn:fix_redshift_cluster into 529832f47200a8a111c8502e747ef77c8b4db7d7 on coursera:develop.
Currently the RedshiftDataNode will retrieve the local IP of the leader node, which cannot be accessible if the cluster is hosted outside VPC. This can be fixed by passing the JDBC connection string instead of the cluster_id.